42943278 has 32 divisors (see below), whose sum is σ = 98484480. Its totient is φ = 12228480.

The previous prime is 42943259. The next prime is 42943279. The reversal of 42943278 is 87234924.

42943278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

42943278 is a nontrivial binomial coefficient, being equal to C(9268, 2).

It is a super-3 number, since 3×42943278³ (a number of 24 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42943279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12358 + ... + 15446.

It is an arithmetic number, because the mean of its divisors is an integer number (3077640).

Almost surely, 2^42943278 is an apocalyptic number.

42943278 is the 9267-th triangular number and also the 4634-th hexagonal number.

42943278 is an abundant number, since it is smaller than the sum of its proper divisors (55541202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42943278 is a wasteful number, since it uses less digits than its factorization.

42943278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3432.

The product of its digits is 96768, while the sum is 39.

The square root of 42943278 is about 6553.1120851089. The cubic root of 42943278 is about 350.1856919402.

The spelling of 42943278 in words is "forty-two million, nine hundred forty-three thousand, two hundred seventy-eight".